java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/llreve/loop5_unsafe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:50:35,921 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:50:35,923 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:50:35,936 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:50:35,936 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:50:35,937 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:50:35,938 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:50:35,942 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:50:35,943 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:50:35,944 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:50:35,946 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:50:35,946 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:50:35,947 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:50:35,948 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:50:35,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:50:35,952 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:50:35,953 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:50:35,967 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:50:35,968 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:50:35,969 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:50:35,970 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:50:35,972 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:50:35,973 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:50:35,973 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:50:35,974 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:50:35,974 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:50:35,975 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:50:35,981 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:50:35,982 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:50:35,982 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:50:35,983 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:50:35,983 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:50:35,984 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:50:35,984 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:50:35,991 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:50:35,991 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:50:36,016 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:50:36,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:50:36,016 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:50:36,016 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:50:36,017 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:50:36,018 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:50:36,019 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:50:36,019 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:50:36,019 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:50:36,019 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:50:36,019 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:50:36,020 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:50:36,020 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:50:36,020 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:50:36,020 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:50:36,020 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:50:36,021 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:50:36,021 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:50:36,021 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:50:36,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:50:36,021 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:50:36,023 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:50:36,024 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:50:36,072 INFO ]: Repository-Root is: /tmp [2018-06-24 20:50:36,088 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:50:36,093 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:50:36,095 INFO ]: Initializing SmtParser... [2018-06-24 20:50:36,095 INFO ]: SmtParser initialized [2018-06-24 20:50:36,096 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/loop5_unsafe.c-1.smt2 [2018-06-24 20:50:36,097 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 20:50:36,182 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/loop5_unsafe.c-1.smt2 unknown [2018-06-24 20:50:36,332 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/loop5_unsafe.c-1.smt2 [2018-06-24 20:50:36,337 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:50:36,342 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:50:36,342 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:50:36,342 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:50:36,343 INFO ]: ChcToBoogie initialized [2018-06-24 20:50:36,346 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:50:36" (1/1) ... [2018-06-24 20:50:36,404 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:50:36 Unit [2018-06-24 20:50:36,404 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:50:36,405 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:50:36,405 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:50:36,405 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:50:36,426 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:50:36" (1/1) ... [2018-06-24 20:50:36,430 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:50:36" (1/1) ... [2018-06-24 20:50:36,437 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:50:36" (1/1) ... [2018-06-24 20:50:36,437 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:50:36" (1/1) ... [2018-06-24 20:50:36,440 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:50:36" (1/1) ... [2018-06-24 20:50:36,442 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:50:36" (1/1) ... [2018-06-24 20:50:36,443 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:50:36" (1/1) ... [2018-06-24 20:50:36,444 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:50:36,444 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:50:36,444 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:50:36,444 INFO ]: RCFGBuilder initialized [2018-06-24 20:50:36,446 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:50:36" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 20:50:36,460 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:50:36,460 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:50:36,460 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:50:36,460 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:50:36,460 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:50:36,460 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:50:36,740 INFO ]: Using library mode [2018-06-24 20:50:36,741 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:50:36 BoogieIcfgContainer [2018-06-24 20:50:36,741 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:50:36,741 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:50:36,741 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:50:36,742 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:50:36,743 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:50:36" (1/1) ... [2018-06-24 20:50:36,756 INFO ]: Initial Icfg 13 locations, 14 edges [2018-06-24 20:50:36,758 INFO ]: Using Remove infeasible edges [2018-06-24 20:50:36,758 INFO ]: Using Maximize final states [2018-06-24 20:50:36,759 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:50:36,759 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:50:36,760 INFO ]: Using Remove sink states [2018-06-24 20:50:36,761 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:50:36,761 INFO ]: Using Use SBE [2018-06-24 20:50:36,792 INFO ]: SBE split 2 edges [2018-06-24 20:50:36,805 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:50:36,806 INFO ]: 0 new accepting states [2018-06-24 20:50:36,868 INFO ]: Removed 9 edges and 4 locations by large block encoding [2018-06-24 20:50:36,870 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:50:36,871 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:50:36,871 INFO ]: 0 new accepting states [2018-06-24 20:50:36,871 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:50:36,871 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:50:36,871 INFO ]: Encoded RCFG 7 locations, 10 edges [2018-06-24 20:50:36,872 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:50:36 BasicIcfg [2018-06-24 20:50:36,872 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:50:36,873 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:50:36,873 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:50:36,877 INFO ]: TraceAbstraction initialized [2018-06-24 20:50:36,877 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:50:36" (1/4) ... [2018-06-24 20:50:36,878 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc2dea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:50:36, skipping insertion in model container [2018-06-24 20:50:36,878 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:50:36" (2/4) ... [2018-06-24 20:50:36,878 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc2dea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:50:36, skipping insertion in model container [2018-06-24 20:50:36,878 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:50:36" (3/4) ... [2018-06-24 20:50:36,878 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc2dea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:50:36, skipping insertion in model container [2018-06-24 20:50:36,878 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:50:36" (4/4) ... [2018-06-24 20:50:36,880 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:50:36,889 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:50:36,897 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:50:36,955 INFO ]: Using default assertion order modulation [2018-06-24 20:50:36,956 INFO ]: Interprodecural is true [2018-06-24 20:50:36,956 INFO ]: Hoare is false [2018-06-24 20:50:36,956 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:50:36,956 INFO ]: Backedges is TWOTRACK [2018-06-24 20:50:36,956 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:50:36,956 INFO ]: Difference is false [2018-06-24 20:50:36,956 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:50:36,956 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:50:36,970 INFO ]: Start isEmpty. Operand 7 states. [2018-06-24 20:50:36,984 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:50:36,984 INFO ]: Found error trace [2018-06-24 20:50:36,985 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:50:36,985 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:50:36,990 INFO ]: Analyzing trace with hash 991436244, now seen corresponding path program 1 times [2018-06-24 20:50:36,992 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:50:36,993 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:50:37,038 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:50:37,038 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:50:37,038 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:50:37,097 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:50:37,188 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:50:37,190 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:50:37,190 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 20:50:37,192 INFO ]: Interpolant automaton has 4 states [2018-06-24 20:50:37,203 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 20:50:37,203 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 20:50:37,207 INFO ]: Start difference. First operand 7 states. Second operand 4 states. [2018-06-24 20:50:37,314 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:50:37,314 INFO ]: Finished difference Result 11 states and 17 transitions. [2018-06-24 20:50:37,315 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:50:37,315 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 20:50:37,316 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:50:37,325 INFO ]: With dead ends: 11 [2018-06-24 20:50:37,325 INFO ]: Without dead ends: 11 [2018-06-24 20:50:37,327 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:50:37,352 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 20:50:37,373 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-24 20:50:37,375 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:50:37,375 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2018-06-24 20:50:37,376 INFO ]: Start accepts. Automaton has 9 states and 14 transitions. Word has length 6 [2018-06-24 20:50:37,377 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:50:37,377 INFO ]: Abstraction has 9 states and 14 transitions. [2018-06-24 20:50:37,377 INFO ]: Interpolant automaton has 4 states. [2018-06-24 20:50:37,377 INFO ]: Start isEmpty. Operand 9 states and 14 transitions. [2018-06-24 20:50:37,378 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:50:37,378 INFO ]: Found error trace [2018-06-24 20:50:37,378 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:50:37,378 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:50:37,378 INFO ]: Analyzing trace with hash 669135633, now seen corresponding path program 1 times [2018-06-24 20:50:37,378 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:50:37,378 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:50:37,379 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:50:37,379 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:50:37,379 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:50:37,406 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:50:37,632 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:50:37,632 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:50:37,632 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:50:37,638 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:50:37,664 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:50:37,672 INFO ]: Computing forward predicates... [2018-06-24 20:50:37,891 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:50:37,925 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:50:37,925 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-24 20:50:37,925 INFO ]: Interpolant automaton has 6 states [2018-06-24 20:50:37,926 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 20:50:37,926 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:50:37,926 INFO ]: Start difference. First operand 9 states and 14 transitions. Second operand 6 states. [2018-06-24 20:50:38,014 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:50:38,014 INFO ]: Finished difference Result 13 states and 19 transitions. [2018-06-24 20:50:38,015 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:50:38,015 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-24 20:50:38,015 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:50:38,016 INFO ]: With dead ends: 13 [2018-06-24 20:50:38,016 INFO ]: Without dead ends: 13 [2018-06-24 20:50:38,017 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:50:38,017 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 20:50:38,019 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-06-24 20:50:38,019 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 20:50:38,019 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 17 transitions. [2018-06-24 20:50:38,019 INFO ]: Start accepts. Automaton has 11 states and 17 transitions. Word has length 7 [2018-06-24 20:50:38,019 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:50:38,019 INFO ]: Abstraction has 11 states and 17 transitions. [2018-06-24 20:50:38,019 INFO ]: Interpolant automaton has 6 states. [2018-06-24 20:50:38,019 INFO ]: Start isEmpty. Operand 11 states and 17 transitions. [2018-06-24 20:50:38,020 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:50:38,020 INFO ]: Found error trace [2018-06-24 20:50:38,020 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:50:38,020 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:50:38,020 INFO ]: Analyzing trace with hash 670059154, now seen corresponding path program 1 times [2018-06-24 20:50:38,020 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:50:38,020 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:50:38,021 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:50:38,021 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:50:38,021 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:50:38,033 INFO ]: Conjunction of SSA is sat [2018-06-24 20:50:38,035 INFO ]: Counterexample might be feasible [2018-06-24 20:50:38,047 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:50:38,048 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:50:38 BasicIcfg [2018-06-24 20:50:38,048 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:50:38,049 INFO ]: Toolchain (without parser) took 1711.41 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 214.1 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 3.6 GB. [2018-06-24 20:50:38,050 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:50:38,050 INFO ]: ChcToBoogie took 62.36 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 262.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:50:38,051 INFO ]: Boogie Preprocessor took 38.71 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 261.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 20:50:38,051 INFO ]: RCFGBuilder took 296.72 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 253.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:50:38,052 INFO ]: BlockEncodingV2 took 130.71 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 249.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:50:38,052 INFO ]: TraceAbstraction took 1174.92 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 214.1 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 3.6 GB. [2018-06-24 20:50:38,056 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 14 edges - StatisticsResult: Encoded RCFG 7 locations, 10 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.36 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 262.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.71 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 261.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 296.72 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 253.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 130.71 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 249.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1174.92 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 214.1 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0, 0); [L0] assume !(0 <= hbv_inv_main29_1_Int + -1 && !(hbv_inv_main29_2_Int == 0)); [L0] hhv_inv_main23_0_Int, hhv_inv_main23_1_Int, hhv_inv_main23_2_Int, hhv_inv_main23_3_Int, hhv_inv_main23_4_Int := hhv_inv_main29_0_Int, hhv_inv_main29_1_Int, hbv_inv_main29_3_Int, hbv_inv_main29_1_Int, hhv_inv_main29_2_Int; [L0] havoc hbv_inv_main29_2_Int, hbv_inv_main29_3_Int, hbv_inv_main29_1_Int; [L0] assume ((hhv_inv_main23_4_Int == 0 && hhv_inv_main23_2_Int == hhv_inv_main23_0_Int) && hhv_inv_main23_3_Int == hhv_inv_main23_0_Int + 1) && !(!(hbv_inv_main23_3_Int == 0) && 0 <= hbv_inv_main23_1_Int + hbv_inv_main23_1_Int + -1 * hbv_inv_main23_2_Int + -1); [L0] hhv_inv_main10_0_Int, hhv_inv_main10_1_Int, hhv_inv_main10_2_Int, hhv_inv_main10_3_Int := hhv_inv_main23_0_Int, hbv_inv_main23_1_Int, hbv_inv_main23_2_Int, hhv_inv_main23_1_Int; [L0] havoc hbv_inv_main23_2_Int, hbv_inv_main23_1_Int, hbv_inv_main23_3_Int; [L0] assume ((hhv_inv_main10_2_Int == hbv_inv_main10_1_Int + 1 && 0 <= hhv_inv_main10_1_Int + hhv_inv_main10_1_Int + -1 * hbv_inv_main10_1_Int + -1) && hhv_inv_main10_3_Int == hbv_inv_main10_3_Int + 1) && !(hbv_inv_main10_2_Int == 0); [L0] hhv_inv_main10_0_Int, hhv_inv_main10_1_Int, hhv_inv_main10_2_Int, hhv_inv_main10_3_Int := hhv_inv_main10_0_Int, hhv_inv_main10_1_Int, hbv_inv_main10_1_Int, hbv_inv_main10_3_Int; [L0] havoc hbv_inv_main10_2_Int, hbv_inv_main10_1_Int, hbv_inv_main10_3_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 7 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 5 SDslu, 38 SDs, 0 SdLazy, 37 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 2 QuantifiedInterpolants, 391 SizeOfPredicates, 4 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-50-38-068.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-50-38-068.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-50-38-068.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-50-38-068.csv Received shutdown request...